This device comprises a spray assembly (40) for spraying fluid into the chamber, and a fluid feed pipe (42) intended to feed fluid to the spray assembly (40). It comprises a fluid-distributing intermediate receptacle (46) positioned between the feed pipe (42) and the spray assembly (40), the intermediate receptacle (46) being connected upstream to the feed pipe (42) and comprising a fluid-evacuating sidewall (52) delimiting through orifices (60) connected to the spray assembly (40). It comprises at least one pipe (44A to 44D) for evacuating fluid towards the chamber (19) and projecting into the intermediate receptacle (46) opposite the sidewall (52).

A low energy nuclear thermoelectric system for a vehicle which provides a cost-effective and sustainable means of transportation for long operation range with zero emission using an onboard low energy nuclear reaction thermal generator. The present invention generally includes a thermal generator within a thermal enclosure case, an energy conversion system linked with the thermal generator, an energy storage system linked with the energy conversion system, a cooling system and a central control system. The thermal generator reacts nickel powder with hydrogen within a reactor chamber to produce heat. The heat is then transferred to the energy conversion system to be converted into electricity for storage in the energy storage system. The cooling system provides cooling for the various components of the present invention and the control system regulates its overall operation. The present invention may be utilized to power a vehicle in an efficient, sustainable and cost-effective manner.